Water-heater.



E. RUUD.

WATER HEATER.

APPLICATION FILED MAYG, 1912.

Patented Jan. 14, 1913.

i NVENTOFR flun naw a w FRG-L till "To ail whom itmay concern:

' gheny and State of Pennsylvania, have inconnect with the circulating pipes, the

Eouplings at the lower extremities of the creme rn rnn'r orrion.

EIEWIN BUUD, O13 PITTSBURGH, PENNSYLVANIA.

WATER-HEATER.

Appliaation filed May 6, 1912. Serial No. 695,431.

holding device. Fig. 8 is a detail of one of the coil extremities before it is connected to a manifold.

Referring to the drawings, 2 designates the cylindrical two-part shellor casing of a gas heated coil water heater with a flue connecting cap 3 fitting its upper end. For the two-coil type of heater here shown the' Be it known that I, EDWIN ne a resident of littsburgh, in the; county of Allei ented certain new and useful Improvements in Water-Heaters, of which the following is a specification.

Gonsid'erable trouble has been experienced with gas burning instantaneous water heaters due to the bending and mutilating of the relatively thin cop er or other coils which are ordinadly supported by extending their unprotected extremities through openings in the casing and into position to two seat-forming notches 4-, which are preferably flanged as shown to provide bearing in place. The lower portion of the casing is formed with an opening or passageway 5. in the present adaptation two circulating weightof the coil bending and sometimes coils (3 and 7 are located within the casing rupturing to thin metal extremities which bear on the comparatively thin metal 0 the casing. Also rough or careless manipulation by workmen when installing heaters and. connecting the circulating pipes frequently results in bending and straining the coils. Furthermore, the vibrating or sha ing of the coils when the heaters are being handled or shipped bends and strains their supporting extremities. i

The object of the invention is to over-' come these (llllll-CllltlBS by relieving the coil cxtremitiesof all distorting strains, and by providing for permanently fixing the coils within the ,casing so that it is quite impossible for them to more or become displaced. A further object is to so construct the casing that the coil or coils may be placed therein with the holding devices located on the coil or; remities, in the preferred adaptation two coils being employed which are connected by manifolds at their upper and lower ends before being inserted inthe casformed of relatively thin copper tubing. The coils are so arranged that their upper laterally projecting extremities 6 and 7, respectively, are in parallel relation, and the same is true of their lower extremities. On each. extremity of each coil is a bushing or combined supporting and coupling nut 8 into which the coil end is extended with theextremity thereof flared outwardly at 9 coupling. being clamped and scaled on the seat by the tapered extremity 10" of mani .i'old 10. One of these manifolds connects the two upper couplings 8 and another like manifold the two lower couplings, the circulating pipes connecting with these manifolds, as will be understood.

he exterior of each coupling nut- 8 is cud of the casing, also soul's 5 of opening 5, being secured on the latter by the pronged or forked plate 12. This plate is curved to it the exterior of-casing 2 and is formed with two downwardly extending prongs 13, which engage the exterior of the casing, and the central inward oil'sct prong 14: which engages the inner surface thereof. as shown in Fig. prongs 13 being shaped to {it the coupling grooves ll. When in posihon plate 12 is moved inwardly beneath stop 15 projecting from the casing which holds it in place. The coupling nuts may he placed loosely on the coil extremities be fore or after the coils are assembled, the bell or flare 9 preventing them from dropping off. see Fig. 8.

When, as in the present adaptation, twc

coils are employed having laterally promotin the accompanying drawings, Figure 1 is a vertical section of the casing and elevation of the coils of a water heater constructed ini accordanccwith the invention, said view b ing taken on lines 1-,l of Figs. 2 and 3. 2 is a top plan with the casing cap removed. Fig. 3 is an elevation of the casing before the coils are positioned therein. Fig. l is a vertical. section through the lower extremity of one of the coils and its sustaining coupling. Fig. 5 is a sectional detail of the holding device for the coils, taken on line 5 5 of Fig, and J igs. G and 7 are views inperspective of said grooved atll to fit notches 4 at the upper.

top edge of the casing is formed with the surfaces, and which are closed' when cap 3 1S in nested relation, the coils beingusuallyagainst the beveled internalscat 9 of the 'ing the extremity of the inner coil through or between the convolutions of the are fixed on seats 5.-

them that v placed,

coilunt-il one is fully Within the-other.

With the coils assembled they are secured together by screwing up thecouplings on manifolds 10, thereby sealing the connections between the manifolds aiid coils, as

above described. The connected coils are then inserted in the casing,'the couplings at the upper end seating in notches 4., and the manifold at the lower end is projected through casing opening 5, audits couplings Casing 2 is then closed, cap 3 is applied,

coils and their connections Within the cusiug and'sopermanently they cannot loosen orbecome disat the same time protecting the I thin metal tubing of the coils from distorting or denting strains-. As the couplings are rigid with the casing the latter relieves the coils of all strains that may occur when connecting the circulatingpipes. the" coils permanently held they are maintainedin propnposition relative to the burner and the ascending heat currents, incurring constant maximum efiiciency.

I claim Y p 1. In a water heater, the combination of I a casing provided with seat-forming openuniting with the couplings, and meansire @movably holding the couplings seated in of, a casing having j lower portions p ot- 1 fin'g seats 7 and the upper adapted to 'admitings, a coil jot-relatively thin the casing, combined coupling and supporting devices of tubular format the extremities of the coil and removably seated in the casing openings, water circulating connections at the exterior of. the casing the casing openings.

n a water heliter, the combination openings with the openings form- 'portions there- 'cou'pling devices which reston the seats, a coil ofrelatively thin metal within lthe casing, coupling devices 'at 'the extremities of the coil pro jectedth'rol igh the casing openings and restingin the seat-forming portions thereof. means holdingthe couplings seated. in said 55' openings,' the portionsoi the couplings at the exterior-bi ths: casin adapted to unite -Wlth water circulating connections.

3. In a water heater, the combination of a casing provided with an opening with a seat formed by the wall of such opening, a coil of pip'e Within the casing, and an exteriorly grooved coil supporting" device to v which the coil-is connected, .saiddevioe en tered in the-casing opening and with the exterior-thereof embracing the seat-forming outer and locking plate inserted, thereby rigidly securing the and rigidly holding Also, withtubing within,

portion of'the opening wall for'retaining said device against either inward or outpling. a coil 0f pipe within the casing, ar'

coupling at an extremity of the coil with the coupling entered in the casing opening, .and means for removably confining the coupling-in said opening.

, 6. In a water heater, the combination of an uprightcasing having vertically separated openings formed therein, a coil of pipe within the casing, and couplings at the extremities of the coil and forming continuations thereof with the couplings located in the casing openings.

7. In a water heater, the combination of an upright casing having vertically separated openings,'a coil of pipe within the ciising, couplings secured to the extremities of the coil and forming continuations thereof and means holding the couplingsfixed inv the casing openings with the couplings immovably sustaining the coil.

' 8. In a-water heater, the combination of an upright casing provided with vertically separated openings, two upright coils in the casing-one coil within the other, couplings atthe upper and lower extremities of the coils, and means removably securing the couplings within the casing openin 9. an upright casing open at thetop and notched downwardlyto receive a couplin the lower portion'of the casing formed wit an opening throughwhich a coupling is adapted to pass, a coil of pipewithin' the casing, couplings at the. upper and lower extremities of thecoil with the upper coupling adapted to fit the casing notch and the lower coupling adapted toextend through i the opening in thelower portion of the one i ng,,means for securing said lower coupling to the casing, and end of the casing.

10. In a water heater, the combination of a casing having two openings which fol-1n coupling seats, the"lower portion of the casing formed with an opening,.two" coils in the. casing o'ne coil within the other, couplingsa't the upper extremities of the coils adapted to fitthe seat-fanning openi'ngs, a manifold connecting the upper couplings, couplings at the lower extremities of thecoils with the coupling. extending In a water heater, the combination of 1a mammau: casing passageway a manifwid f we lower smapbngs, and means th s iower cmzpimgs mhe casopening neatm', the combinatian 0f cofis sf pipe the-rem, connectirms w v Ltmugh *Lhe casing 501- the upper WES Gm soils, the imam" pnri'ion 0f: the mg formec i with an opemng, exteriorly wed som'fiings laws!" extremiiies so?" 'WiL-A the cmiplings extenling i opening and a holding device he gzeovad ao'uplings ami SYQBHICW- sscumd to the casing far holding ahe 1Q gwqfiium wiihin said smiling.

a Water heater, vibe wmbinai'mn 0f mils 0f pipe therein, connections amending through the ca sing Ear the uppas' ens @f'the coils, ifiha lower portion of 211% casing formefi. with an opening, exteriorly grom ed couplings extending through sax-if opening, 3116. a pronged ho'hiing lex' ice em: bracing the groaved couplings with one prong thereof enterezi in the 0 .)sning an'i engaging the inner surface 0f the casing ancl two prongs thereof engaging the exterior of the casing.

in aestimony whereof I affix my signature in presence of two witnesses.

'EIFWTN KUUD. 

